Positive Psychology Interventions in Early-Stage Cognitive Decline Related to Dementia: A Systematic Review of Cognitive and Brain Functioning Outcomes of Mindfulness Interventions. - Vasileiou, Dimitra; Moraitou, Despina; Diamantaras, Konstantinos; Papaliagkas, Vasileios; Pezirkianidis, Christos; Tsolaki, Magda (Brain Sciences (2076-3425), 2025)